arch/arm/mach-ixp4xx/ixdp425-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/ixdp425-setup.c
   3  *
   4  * IXDP425/IXCDP1100 board-setup
   5  *
   6  * Copyright (C) 2003-2005 MontaVista Software, Inc.
   7  *
   8  * Author: Deepak Saxena <dsaxena@plexity.net>
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/device.h>
  14 #include <linux/serial.h>
  15 #include <linux/tty.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/i2c-gpio.h>
  18 #include <linux/io.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/nand.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <linux/delay.h>
  23 #include <asm/types.h>
  24 #include <asm/setup.h>
  25 #include <asm/memory.h>
  26 #include <mach/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/irq.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/flash.h>
  31
  32 #define IXDP425_SDA_PIN         7
  33 #define IXDP425_SCL_PIN         6
  34
  35 /* NAND Flash pins */
  36 #define IXDP425_NAND_NCE_PIN    12
  37
  38 #define IXDP425_NAND_CMD_BYTE   0x01
  39 #define IXDP425_NAND_ADDR_BYTE  0x02
  40
  41 static struct flash_platform_data ixdp425_flash_data = {
  42         .map_name       = "cfi_probe",
  43         .width          = 2,
  44 };
  45
  46 static struct resource ixdp425_flash_resource = {
  47         .flags          = IORESOURCE_MEM,
  48 };
  49
  50 static struct platform_device ixdp425_flash = {
  51         .name           = "IXP4XX-Flash",
  52         .id             = 0,
  53         .dev            = {
  54                 .platform_data = &ixdp425_flash_data,
  55         },
  56         .num_resources  = 1,
  57         .resource       = &ixdp425_flash_resource,
  58 };
  59
  60 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
  61     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
  62
  63 static struct mtd_partition ixdp425_partitions[] = {
  64         {
  65                 .name   = "ixp400 NAND FS 0",
  66                 .offset = 0,
  67                 .size   = SZ_8M
  68         }, {
  69                 .name   = "ixp400 NAND FS 1",
  70                 .offset = MTDPART_OFS_APPEND,
  71                 .size   = MTDPART_SIZ_FULL
  72         },
  73 };
  74
  75 static void
  76 ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
  77 {
  78         struct nand_chip *this = mtd->priv;
  79         int offset = (int)this->priv;
  80
  81         if (ctrl & NAND_CTRL_CHANGE) {
  82                 if (ctrl & NAND_NCE) {
  83                         gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_LOW);
  84                         udelay(5);
  85                 } else
  86                         gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_HIGH);
  87
  88                 offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
  89                 offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
  90                 this->priv = (void *)offset;
  91         }
  92
  93         if (cmd != NAND_CMD_NONE)
  94                 writeb(cmd, this->IO_ADDR_W + offset);
  95 }
  96
  97 static struct platform_nand_data ixdp425_flash_nand_data = {
  98         .chip = {
  99                 .nr_chips               = 1,
 100                 .chip_delay             = 30,
 101                 .partitions             = ixdp425_partitions,
 102                 .nr_partitions          = ARRAY_SIZE(ixdp425_partitions),
 103         },
 104         .ctrl = {
 105                 .cmd_ctrl               = ixdp425_flash_nand_cmd_ctrl
 106         }
 107 };
 108
 109 static struct resource ixdp425_flash_nand_resource = {
 110         .flags          = IORESOURCE_MEM,
 111 };
 112
 113 static struct platform_device ixdp425_flash_nand = {
 114         .name           = "gen_nand",
 115         .id             = -1,
 116         .dev            = {
 117                 .platform_data = &ixdp425_flash_nand_data,
 118         },
 119         .num_resources  = 1,
 120         .resource       = &ixdp425_flash_nand_resource,
 121 };
 122 #endif  /* CONFIG_MTD_NAND_PLATFORM */
 123
 124 static struct i2c_gpio_platform_data ixdp425_i2c_gpio_data = {
 125         .sda_pin        = IXDP425_SDA_PIN,
 126         .scl_pin        = IXDP425_SCL_PIN,
 127 };
 128
 129 static struct platform_device ixdp425_i2c_gpio = {
 130         .name           = "i2c-gpio",
 131         .id             = 0,
 132         .dev     = {
 133                 .platform_data  = &ixdp425_i2c_gpio_data,
 134         },
 135 };
 136
 137 static struct resource ixdp425_uart_resources[] = {
 138         {
 139                 .start          = IXP4XX_UART1_BASE_PHYS,
 140                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 141                 .flags          = IORESOURCE_MEM
 142         },
 143         {
 144                 .start          = IXP4XX_UART2_BASE_PHYS,
 145                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 146                 .flags          = IORESOURCE_MEM
 147         }
 148 };
 149
 150 static struct plat_serial8250_port ixdp425_uart_data[] = {
 151         {
 152                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 153                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 154                 .irq            = IRQ_IXP4XX_UART1,
 155                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 156                 .iotype         = UPIO_MEM,
 157                 .regshift       = 2,
 158                 .uartclk        = IXP4XX_UART_XTAL,
 159         },
 160         {
 161                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 162                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 163                 .irq            = IRQ_IXP4XX_UART2,
 164                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 165                 .iotype         = UPIO_MEM,
 166                 .regshift       = 2,
 167                 .uartclk        = IXP4XX_UART_XTAL,
 168         },
 169         { },
 170 };
 171
 172 static struct platform_device ixdp425_uart = {
 173         .name                   = "serial8250",
 174         .id                     = PLAT8250_DEV_PLATFORM,
 175         .dev.platform_data      = ixdp425_uart_data,
 176         .num_resources          = 2,
 177         .resource               = ixdp425_uart_resources
 178 };
 179
 180 /* Built-in 10/100 Ethernet MAC interfaces */
 181 static struct eth_plat_info ixdp425_plat_eth[] = {
 182         {
 183                 .phy            = 0,
 184                 .rxq            = 3,
 185                 .txreadyq       = 20,
 186         }, {
 187                 .phy            = 1,
 188                 .rxq            = 4,
 189                 .txreadyq       = 21,
 190         }
 191 };
 192
 193 static struct platform_device ixdp425_eth[] = {
 194         {
 195                 .name                   = "ixp4xx_eth",
 196                 .id                     = IXP4XX_ETH_NPEB,
 197                 .dev.platform_data      = ixdp425_plat_eth,
 198         }, {
 199                 .name                   = "ixp4xx_eth",
 200                 .id                     = IXP4XX_ETH_NPEC,
 201                 .dev.platform_data      = ixdp425_plat_eth + 1,
 202         }
 203 };
 204
 205 static struct platform_device *ixdp425_devices[] __initdata = {
 206         &ixdp425_i2c_gpio,
 207         &ixdp425_flash,
 208 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 209     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 210         &ixdp425_flash_nand,
 211 #endif
 212         &ixdp425_uart,
 213         &ixdp425_eth[0],
 214         &ixdp425_eth[1],
 215 };
 216
 217 static void __init ixdp425_init(void)
 218 {
 219         ixp4xx_sys_init();
 220
 221         ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 222         ixdp425_flash_resource.end =
 223                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 224
 225 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 226     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 227         ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
 228         ixdp425_flash_nand_resource.end   = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
 229
 230         gpio_line_config(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_OUT);
 231
 232         /* Configure expansion bus for NAND Flash */
 233         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
 234                           IXP4XX_EXP_BUS_STROBE_T(1) |  /* extend by 1 clock */
 235                           IXP4XX_EXP_BUS_CYCLES(0) |    /* Intel cycles */
 236                           IXP4XX_EXP_BUS_SIZE(0) |      /* 512bytes addr space*/
 237                           IXP4XX_EXP_BUS_WR_EN |
 238                           IXP4XX_EXP_BUS_BYTE_EN;       /* 8 bit data bus */
 239 #endif
 240
 241         if (cpu_is_ixp43x()) {
 242                 ixdp425_uart.num_resources = 1;
 243                 ixdp425_uart_data[1].flags = 0;
 244         }
 245
 246         platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
 247 }
 248
 249 #ifdef CONFIG_ARCH_IXDP425
 250 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
 251         /* Maintainer: MontaVista Software, Inc. */
 252         .map_io         = ixp4xx_map_io,
 253         .init_early     = ixp4xx_init_early,
 254         .init_irq       = ixp4xx_init_irq,
 255         .init_time      = ixp4xx_timer_init,
 256         .atag_offset    = 0x100,
 257         .init_machine   = ixdp425_init,
 258 #if defined(CONFIG_PCI)
 259         .dma_zone_size  = SZ_64M,
 260 #endif
 261         .restart        = ixp4xx_restart,
 262 MACHINE_END
 263 #endif
 264
 265 #ifdef CONFIG_MACH_IXDP465
 266 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
 267         /* Maintainer: MontaVista Software, Inc. */
 268         .map_io         = ixp4xx_map_io,
 269         .init_early     = ixp4xx_init_early,
 270         .init_irq       = ixp4xx_init_irq,
 271         .init_time      = ixp4xx_timer_init,
 272         .atag_offset    = 0x100,
 273         .init_machine   = ixdp425_init,
 274 #if defined(CONFIG_PCI)
 275         .dma_zone_size  = SZ_64M,
 276 #endif
 277 MACHINE_END
 278 #endif
 279
 280 #ifdef CONFIG_ARCH_PRPMC1100
 281 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
 282         /* Maintainer: MontaVista Software, Inc. */
 283         .map_io         = ixp4xx_map_io,
 284         .init_early     = ixp4xx_init_early,
 285         .init_irq       = ixp4xx_init_irq,
 286         .init_time      = ixp4xx_timer_init,
 287         .atag_offset    = 0x100,
 288         .init_machine   = ixdp425_init,
 289 #if defined(CONFIG_PCI)
 290         .dma_zone_size  = SZ_64M,
 291 #endif
 292 MACHINE_END
 293 #endif
 294
 295 #ifdef CONFIG_MACH_KIXRP435
 296 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
 297         /* Maintainer: MontaVista Software, Inc. */
 298         .map_io         = ixp4xx_map_io,
 299         .init_early     = ixp4xx_init_early,
 300         .init_irq       = ixp4xx_init_irq,
 301         .init_time      = ixp4xx_timer_init,
 302         .atag_offset    = 0x100,
 303         .init_machine   = ixdp425_init,
 304 #if defined(CONFIG_PCI)
 305         .dma_zone_size  = SZ_64M,
 306 #endif
 307 MACHINE_END
 308 #endif